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 Key fob coding

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MarkGTX
Lupton_20vt
Stampers
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Stampers

Stampers


Male Number of posts : 1553
Age : 37
Location : Soham, Ely
Drives : BMW 32HATE
Registration date : 2009-07-06

Key fob coding Empty
PostSubject: Key fob coding   Key fob coding EmptyTue Feb 23 2010, 09:50

There are two parts of a flip key that need coding...

1) The keyless entry transponder - The 2 or 3 buttons on the fob that unlock the car via central locking.
2) The immobilizer chip - A small chip that sits just behind the flip mechanism (exactly horizontal to the button) that is in contact with the metal of the mechanism to create a circuit causing your immobilizer to stay off, allowing you to start the car successfully.

We all know that VAG-COM can solve so many car issues, but unfortunately for this the program needed is VAG-TACHO.

I've got a new flip key ordered from eBay that has never been used (blank blade) with the wireless transponder of 433MHZ (Golf MK4 2000+) inside and the immobilizer chip in it too.

I already know how to reprogram the wireless key entry transponder to my car, so thats no big issue and there's a guy I know who will cut the blank blade for me, but I dont know where I can get the immobilizer chip programmed for my vehicle.

And no, i'm not going to go to VW and buy a brand new key cut and coded from them. £180 for a flippy key? Bullsh!t.




So, anyone done this before?
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Lupton_20vt

Lupton_20vt


Male Number of posts : 6815
Age : 33
Registration date : 2009-02-01

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyTue Feb 23 2010, 15:48

dude ill ring you and explain if your free?
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MarkGTX

MarkGTX


Male Number of posts : 2925
Age : 36
Location : fens!
Drives : Rocco and Passat
Registration date : 2008-01-19

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PostSubject: Re: Key fob coding   Key fob coding EmptyTue Feb 23 2010, 21:20

if you have something worth saying lupton, share it with the class
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Lupton_20vt

Lupton_20vt


Male Number of posts : 6815
Age : 33
Registration date : 2009-02-01

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PostSubject: Re: Key fob coding   Key fob coding EmptyTue Feb 23 2010, 21:57

really wasnt on writing it out. But basically you need at least two old keys. If not it cant be done you can use your plastic key that comes in your sevice wallet. Wind down the drivers window and put the key you wish to code in the ignition no need to turn it. Using the other key put it into the door lock on the drivers door and turn it fully clockwise, as you hold it there hold the unlock button on your key in the ignition for 3 seconds then let go and press it again for another three seconds whilst still keeping the door lock key turned. Then let go the indicators should flash the same as when you unlock the car.

As for the other key Stamps if you have two keys anyway the blades are interchangeable. You do this by removing the tiny pin that you see when the key is half way out. Key fob coding 680462
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Stampers

Stampers


Male Number of posts : 1553
Age : 37
Location : Soham, Ely
Drives : BMW 32HATE
Registration date : 2009-07-06

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 09:15

Lupton_20vt wrote:
really wasnt on writing it out. But basically you need at least two old keys. If not it cant be done you can use your plastic key that comes in your sevice wallet. Wind down the drivers window and put the key you wish to code in the ignition no need to turn it. Using the other key put it into the door lock on the drivers door and turn it fully clockwise, as you hold it there hold the unlock button on your key in the ignition for 3 seconds then let go and press it again for another three seconds whilst still keeping the door lock key turned. Then let go the indicators should flash the same as when you unlock the car.

As for the other key Stamps if you have two keys anyway the blades are interchangeable. You do this by removing the tiny pin that you see when the key is half way out. Key fob coding 680462

You're right and you're wrong.
That's how you code the TRANSPONDER. not the IMMOBILISER CHIP.
Coding the transponder (to unlock doors, and bring windows down via the key fob) is done with the two key method, you mentioned above. Pretty simple.
And yes, the pins can be removed so the blades are interchangeable. Guy has this written up in the 'how-to' section. I did this, but then the immobiliser locked as the IMMOBILISER CHIP in the new remote wasnt coded to the ignition of the car, whereas the old one was.

Key fob coding Key38

Hopefully that image helps to let you know what I mean.
I am pretty sure you need VAG-TACHO to sort it out, as its all ECU based (where the immobilizer is programmed) so cannot be done with the lock based techiques.
I've heard some locksmiths can program it for you, but I was just wondering if anyone had got theirs re-coded before?
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max

max


Male Number of posts : 2945
Age : 33
Location : linton, cambs
Drives : Mk4 GT TDI
Registration date : 2009-02-09

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:00

once youve worked all this out stampers im having you explaining this to me in person!

i really need a spare key as i only have one but as you said f**k paying the stealers £180!
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bramley




Male Number of posts : 89
Age : 37
Drives : Mk1 caddy
Registration date : 2008-12-17

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:06

all these modern cars with fancy-pants electrical gubbins to go wrong. old school ftw!
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Ian83

Ian83


Male Number of posts : 493
Age : 40
Location : Cambridge
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Registration date : 2008-12-01

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PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:15

What year is your car? If it's after 2001 then it will be Immo3 which i don't think you can get the 4 digit code for like you can with Immo2 to program keys in. If you have boot release on the key it's normally Immo3 if i remember rightly

Any reasonable VW dealer or specialist should be able to code keys if they have the right equipment and not try to rip you off by getting you to buy a new key.

Have you brought a replacement key off Ebay? If so be careful because if the car is Immo3 once a key is coded to a car then it's set to that car for life you can't get it to work on another car for the immobiliser.
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Stampers

Stampers


Male Number of posts : 1553
Age : 37
Location : Soham, Ely
Drives : BMW 32HATE
Registration date : 2009-07-06

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:24

max wrote:
once youve worked all this out stampers im having you explaining this to me in person!

i really need a spare key as i only have one but as you said f**k paying the stealers £180!

If your car is a pre May 2000 model (1997 to April 2000), then you wont have the problem with the immobilizer as they didnt have one! Wish i'd have got a '99 plate one now just to be safe...
The May 2000 onwards models had a few small changes such as immobilizer, secondary air pump etc that makes it a pain in the arse.

I read on UKMKIV's that someone had their immobilizer chip re-coded by VW for £20. I'd rather buy a spare eBay key and get that done than chucking £200 away when that could go on spacers and bodywork.


bramley wrote:
all these modern cars with fancy-pants electrical gubbins to go wrong. old school ftw!
The irony is, my car is still on the road and working...

Key fob coding Owned-subaru
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bramley




Male Number of posts : 89
Age : 37
Drives : Mk1 caddy
Registration date : 2008-12-17

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:29

Stampers wrote:

The irony is, my car is still on the road and working...

Key fob coding Icon_redface yeah spose. but thats more due to my shite finances than old technology.

£180 for a key is nuts mate! don't blame you for trying to get it cheaper.
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Stampers

Stampers


Male Number of posts : 1553
Age : 37
Location : Soham, Ely
Drives : BMW 32HATE
Registration date : 2009-07-06

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:42

Ian83 wrote:
What year is your car? If it's after 2001 then it will be Immo3 which i don't think you can get the 4 digit code for like you can with Immo2 to program keys in. If you have boot release on the key it's normally Immo3 if i remember rightly

Any reasonable VW dealer or specialist should be able to code keys if they have the right equipment and not try to rip you off by getting you to buy a new key.

Have you brought a replacement key off Ebay? If so be careful because if the car is Immo3 once a key is coded to a car then it's set to that car for life you can't get it to work on another car for the immobiliser.

Its an X reg late 2000 model with no boot lock function, so its an IMMO2.
And yeah, with IMMO3, VAG-TACHO cant drag the SKC code from the immobilizer. If the car is an IMMO3, you definitely need to take the key to VW to get it re-coded.

Yep, bought a replacement off eBay. If you use the earlier ones in this list...

http://reviews.ebay.co.uk/VW-VOLKSWAGEN-REMOTE-KEY-FOBS_W0QQugidZ10000000002183437

...you should be safe as they will be the IMMO2 versions. The IMMO3 versions are to the right of them with the updated codes. I've ordered myself an HLO 1JO 959 753 AG code spare key (with a blank blade all perfect and intact), which is exactly the same as my current one.

You can find the fob code when you split it in half and look on the lower half (button half) of the key. Also make sure the MHz is the same. You get either 433MHz of 434MHz. Mines the 433MHz version.



Oh, and a word of warning of what I have come across...

DONT BUY KEY TOP HALVES - There are alot of people selling either the bottom or top halves of keys on eBay as the metal keyring on the bottom often snaps off. The bottom halves are fine if you want to take the circuit board for your remote unlocking out of your old fob and put it in the new bottom half as this works (they rarely come with a spare circuit board in them so be advised).
However, the top halves NEVER come with an immobilizer chip. And these cannot be removed from your old top half without destorying it by ripping it to pieces.
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Stampers

Stampers


Male Number of posts : 1553
Age : 37
Location : Soham, Ely
Drives : BMW 32HATE
Registration date : 2009-07-06

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 10:45

bramley wrote:
Stampers wrote:

The irony is, my car is still on the road and working...

Key fob coding Icon_redface yeah spose. but thats more due to my shite finances than old technology.

£180 for a key is nuts mate! don't blame you for trying to get it cheaper.

Fair enough buddy.
Get it back on the road as soon as you can mate. We need to get that thing looking sweeeeet!

And yeah, I could get some more wheels with that kind of money! Key fob coding Icon_razz
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max

max


Male Number of posts : 2945
Age : 33
Location : linton, cambs
Drives : Mk4 GT TDI
Registration date : 2009-02-09

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PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 16:01

all of this is confusing as f**k! ive got a '99 golf so this means il need the two button IMMO2 key and will then have to get the keys immobiliser coded by vw?

sorry to be a tard here lads but theres far to much jargon in this for me to understand
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jimmymidnight

jimmymidnight


Male Number of posts : 1998
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Registration date : 2008-03-13

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptyWed Feb 24 2010, 16:12

i thought about going through all this when i dropped my bora key in a mojito... i soon gave up.
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Stampers

Stampers


Male Number of posts : 1553
Age : 37
Location : Soham, Ely
Drives : BMW 32HATE
Registration date : 2009-07-06

Key fob coding Empty
PostSubject: Re: Key fob coding   Key fob coding EmptySat Apr 03 2010, 12:05

End result:

Don't bother. Mk4's are more of a pain in the arse than you think... Laughing
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